Stove attachment



Aug. 14, 1923. 11,464,98fi

J. B. GAJ

STOVE ATTACHMENT Filed Sept. 21 1922 3 Sheets-Sheet 1 Aug. 14, 1923.

J. B. GAJ

STOVE ATTACHMENT Filed Sept. 21 1922 3 Sheets-Sheet 2 Aug. 14, 1923.

11,464,986 J. a. GAJ

STOVE ATTACHMENT D Filed Sept. 21, 1922 3 Sheets-Sheet 5 w, 74 FIG. 6 mT,

Z4 FLUE TO'STACK mounted on the end of the stove so that air PatentedAug. 14, 19:23.

" UNITED "STATES M time ili

J'QHN B. GAJ", F DETROIT, MICHIGAN.

s'rovn ATTACHMENT.

V. Application fi led September 21,1922. Serial No. 589,592.

To all whom it'ma-g concern: r

Be it known that JOHN B. GAJ, a citizen of Poland,"residing at'Detroit,in the county of. Wayne and State of Michigan, has invented certain newand useful Improvements in Stove .Attachments, of which the follow ingis a specification.

This invention relates to a pump attachment for a stove'o-r range havinga cooking top and an exhaust, the attachment being in or about theattachment maybe heated by the stove.

My inventionaim's to provide apump attachment including a 'multicylinderpump which may be operated for numerous purposes. f I i 7 First, certaincylinders of .the' pump may be used to supplyair tothe lexhaustflue of20 the stove to produce a draft therein and thus increase the efiiciencyof the stove, as a fuel" burner, should there be a defective chimney. r

Second, the same pump cylinder may be used for supplying'warm air to therooms of a house, especially when such cylinders are shut off from theexhaust flue of the stove...

Third, the pump includes a 'cylinder-communicating with the cooking topand flue of the'stove, so that cooking fumes, odors or burned gases maybe withdrawn from the cooking top and discharged to the atmosphere byvirtue of the exhaust flue of the stove. Y 7

Fourth, instead of using the air under pressure for either heating orforce draft purposes, the air may be directed against a fan to causebetter ventilation or circulation of air in a room, the fanbeingsubstituted for an V ordinarygas burner. V

The attachment v will be hereinafter de-' s'cribed by aid of'thedrawings, wherein I Figure '1 isaperspective view of a stove orrangefprovided with the'attachment, and showing pipes. that fmay lead tocompartments or rooms, especially one having a gas burner, which may beequipped .Witha fan;

" Fig li tachment;

Fig. 2 is a detail .viewof a gas burner provided with a fan adapted tobefdriven by air from the pump of the attachment; Fig- 3 is'aplanj'of'the same;

s a longitudinal section of the atcylinders.

Fig. 5 is a cross sectional view taken on the l1neV-V of Fig. 4; Q

Fig. 6 is a horizontal sectional view taken onthe line VI-VI of Fig. 1;

Fig. 7 is a vertical section on line VII-VIIof Fig. 4:; V Fig. 8 isdetail View of a suction head, and Fig. 9 1s a plan of a star burnersuch as is replaced by a fan.

In the drawings, the reference numeral 75 i denotes a conventional formof stove or range having a cooking top 16 and an exhaust flue 24communicating with a stack or chimney, and my attachment is mounted atone end of the stove against 'a wall of the fine 24: or a similar stoveflue.

The attachment includes a casing having side walls 1 and 2, a bottomwall 4, a top Wall 3, and end-walls 5 and 6, said walls being made ofsheet metal finished to harmonize with the finish of the stove. The

casing may fit under a shelf 70 or an extens on of the cooking top 16 ofthe stove.

In the casing, parallel to the endfwalls 5 compartments 78, andconnecting the parti- HOE-1S7? and 8 are horizontal partitions 76 an 7On the partition 77 are a plurality of pump cylinders 9, 10,11 and 12,constituting a multi-cylinder pump, the cylinders 9,

.10 and 11 having upper open ends and the cylinder 12 having a l1eadl3.Connected to the head 13 is a pipe 14 extending out of the end wall 6 ofthe casing and along the "frontwall of the stove to a point where it 9,and 11 are connected by pipes 27 and check valves 28 to a header 29below the partition 77 and said header is connected by a, pipe 7 9 to areservoir or tank 30 on the bottom' wall l of the casing, This reservoiris adapted to receive airrfrom thev pump and and 6, are partitions 7 and8 providing end 7 connected to the reservoir is an outlet pipe 35provided with dampers 86 and branch pipes orfiues that may extend torooms of a house. r

The side wall 2 of the casing has air inlet openings 80 and air admittedthereby will be more or less heated by the end of the stove 7 5, so thatwhen pumped through the pipe 35 the air may heat rooms or cause acirculation of air for better ventilating purposes.

In the case of the cylinder 1:2, the bottom thereof has an outlet pipe28, provided with a check valve 26, extending through the wall 1 andinto the flue 4 of the'stove, so that fumes, cooking odors or burned gasmay be i exhausted to the atmosphere.

Connected to the sides of the cylinders 9,

'10 and 11, contiguous to the lower ends thereof, are pipes 82 and 33,the latter extending through 'the wall 1 into the stove flue :24 wheresaid pipes have ends curved towards the outlet ef'said flue. These samepipes have articulated slide dampers or valves 84 operatable by a rod 81extending through the end wallfGfof the casing, and manual actuation ofthe rodSl may open or close the dampers. 7

On the pipe 79 is a valve 31 operatedby rod 82 extending through thecasing end wall 6 and with this valve closed and the dampers 34 open,air may be pumped into the flue 24 to increase the draft therein andcause better burning of fuel in the stove and a better circulation ofheated air about the oven of the stove. With the dampers 34 closedandthe valve 31 open, air may be pumped to the rooms of a house.

' Further use of the air pumped into the pipe85 may be had by a pipe 37connected to the pipe 85, and the pipe 37 may extend to a manifold 39with a valve 38 controlling the use or pressure of air: The manifold 39is in a bracket 40 supporting one or more rotary fans 42 and the fanshave threaded stems 41 which may be mounted in the ends of gas supply.pipes 44, after burners 43 are removed therefrom. Such a burner is shownin Fig. 9 and gas is ordinarily controlled to said burner by valve 45.The gas burner may form part of a conventional form of hot plateorcooking stove and the gas pipes may be used as convenient supports forthe fans. Above the fan is a circular apertured air outlet pipe 46communieating with the manifold 89 and air under pressure may drive thefan and cause a better circulation of air in a room.

Connected to the pistons 18 are piston rods 20 extending through andguided by I the partition 77, said rods being operatively connected bylinks 21 to the crank portions of a crankshaft 2O journaled in the partitions 7. and 8. On the ends of the crank shaft within the endcompartments? 8, are

large gear wheels .63 meshing with small gear wheels 64 and 62, theformer being about the shafts48 and 49 are coiled springs 50, having endconvolutions attached to the shafts,as at 51. Other end convolutions ofthe springs are attached to the hubs52 of gear wheels 53which are looseon the ends,

of the shafts 48 and 49. 'Meshing with the There are optional sources ofpower for gear wheels 53 are. gear wheels 54 slidably keyed on shafts55, 'journale'd in the end walls 5 and 6 and partitions 7 and 80f thecasing. I The -shafts .55 haveshanks 60 on which may be mounted cranksor the like 7 for rotating said shafts, and ratchet wheels 61 and pawls61 are adaptedto prevent accidental rotation of said shafts.

The gear wheels 54 have hubs orsleeves tension or wind said motor.Vviththe gear 7 wheels 54 shifted out of mesh with the gear wheels 53the shafts 48 and 49 are free to be otherwise driven for instance, bytheelectric motor 69 whichfis coupled direct to said motor. 1

On the ends of the shaft 49, within the compartments 12, are sprocketwheels 66. On the ends of the shaft 48 are the sprocket wheels 65 andover the wheels 66 and 65 are trained sprocket chains 67 and 68, pro

viding clearance for the crank shaft 20' and rod 82. V V

The spring motors-may be inclosed by tubular casing 47 connecting thepartitions 7 and 8.

In operation and assuming the spring motors are to be used and have beenwound or placed in an operative condition, the shaft 49 will drivethecrank shaftQO through the sprocket chain 68, sprocket wheel 65, shaft48, and gear wheels 62 and 63.' The shaft 48, actuated by the springthereon will cooperate with the upper motor, and by this arrangementeither spring motor can be used. Y

Should either springmotor failor it be desired to use the "electricmotor 69, then the gear wheels 54'are shifted out of mesh with the'gearwheels 58, thus releasing the shafts 48 and 49 from any springactuation.

. When the motor is placed in operation it drives the shaft 49, sprocketchain 67, sprocket wheel 65 and gear wheels 64; and 63, the gear wheel64 being part of said sprocket wheel. I prefer to depend on the electricmotor 69 when electricity is available, otherwise the spring motors orthe equivalent thereof may be used.

While in the drawings there is illustrated a preferred embodiment of myinvention, it

.is to be understood that the structural elements are susceptible tosuch variationsand modifications as fall within the scope of theappended claims.

What I claim is 2-- 1. The combination with a range having a cooking topand an exhaust fine, of an attachment on the end of said range, said.communication between said pipes and said reservoir, means controllingthe communication between said pump and the range flue, and meansadapted to operate sald pump,

said pump being of the multi-cylinder type with one of the cylindersexhausting fumes from the cooking top of the range.

2. The combination with a range having a cooking top and an exhaustflue, of a pump at the end of the range, said pump having a cylinderadapted to exhaust fumes from the cooking top of the range and anothercylinder adapted to supply air to the exhaust flue of the range toproduce a draft therein, and optional sources of power adapted tooperate said pump.

3. The combination as in claim 2, wherein one of said sources of poweris an electric motor.

4:. The combination with a range having an exhaust flue, of a casing onthe end of said range adapted to have air therein heated by the range, apump in the casing adapted to pump heated air either into said rangeflue or to compartments adapted to be heated by air, and optionalsources of power adapted to operate said pump.

5. The combination set forth in claim 4, wherein one of said sources ofpower is an electric motor on the end of said casing.

In testimony whereof I aflix my signature.

JOHN B. GAJ.

